#5B99BB#5B99BB

#5B99BB is a light, moderate cyan. Relative luminance 0.286; OKLCH L 65.4% C 0.082 H 233.9°. Best body text is #000000 at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#5B99BB
RGB	rgb(91, 153, 187)
HSL	hsl(201, 41%, 55%)
HSV	hsv(201, 51%, 73%)
CMYK	cmyk(51.3%, 18.2%, 0%, 26.7%)
CIE-LAB	lab(60.42, -10.45, -23.79)
CIE-LCH	lch(60.42, 25.98, 246.29°)
OKLab	oklab(65.44% -0.0482 -0.0661)
OKLCH	oklch(65.44% 0.082 233.9)
XYZ	xyz(24.6720, 28.5925, 51.2228)
Luminance	0.2859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5B99BB #BB7D5B

analogous

#5BBBAD #5B99BB #5B69BB

triadic

#5B99BB #BB5B99 #99BB5B

tetradic

#5B99BB #AD5BBB #BB7D5B #69BB5B

square

#5B99BB #AD5BBB #BB7D5B #69BB5B

split-complementary

#5B99BB #BB5B69 #BBAD5B

monochromatic

#2E576E #407999 #5B99BB #86B4CD #B2CFDF

Accessibility & contrast

On white

3.13

#5B99BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.72

#5B99BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5B99BB

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5B99BB	#FFFFFF	#000000	##000000
##5B99BB	1.00	3.13	6.72	6.72
#FFFFFF	3.13	1.00	21.00	21.00
#000000	6.72	21.00	1.00	1.00
##000000	6.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8998BD

Deuteranopia (green-blind)

#7B8DBA

Tritanopia (blue-blind)

#24A2A4

Achromatopsia (no color)

#929292

Design tokens & code

CSS

--color: #5b99bb;
/* rgb */ color: rgb(91, 153, 187);
/* oklch */ color: oklch(65.4% 0.082 233.9);

Tailwind

colors: {
  custom: {
    50: '#8fb7cf',
    500: '#5b99bb',
    950: '#000000',
  },
}

SCSS

$custom: #5b99bb;
$custom-light: #8fb7cf;
$custom-dark: #000000;

JSON

{
  "hex": "#5b99bb",
  "rgb": {
    "r": 91,
    "g": 153,
    "b": 187
  },
  "hsl": {
    "h": 201.25,
    "s": 41.379,
    "l": 54.51
  },
  "oklch": {
    "l": 0.6544,
    "c": 0.08181,
    "h": 233.9
  },
  "luminance": 0.28594
}

Semantic roles & 50–950 ramp

primary

#5B99BB

secondary

#CDB3A5

accent

#8257D1

background

#F9FBFC

surface

#F1F6F9

border

#CBD0D2

text

#0D1113

muted

#7E8082

Preview Lab

Preview with #5B99BB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →